.mb30 {
  margin-bottom: 30px;
}

.card {
  position: relative;
  height: 150px;
}

.mark {
  position: absolute;
  top: 0;
  left: 0;
  z-index: 1;
  width: 100%;
  height: 100%;
  padding: 10px;
  cursor: pointer;
}

.span {
  cursor: pointer;
}

.span:hover {
  background: #eee;
}
